WO2011160385A1

WO2011160385A1 - Self-healing method and base station for obtaining basic configuration parameters in self-configuration process of base station

Info

Publication number: WO2011160385A1
Application number: PCT/CN2010/078775
Authority: WO
Inventors: 郑纪伟
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-06-24
Filing date: 2010-11-16
Publication date: 2011-12-29
Also published as: CN102300207A

Abstract

A self-healing method and base station for obtaining basic configuration parameters in the self-configuration process of a base station are provided. The method includes: if a base station fails to request the basic configuration parameter information of itself in the self-configuration process, the base station transmits a distress sounding broadcast message to neighbor base stations; after receiving the distress sounding broadcast message, and if a neighbor base station succeeds in obtaining basic configuration parameters of itself, the neighbor base station broadcasts a rescue response message to the base station and other neighbor base stations; the base station selects one from all neighbor base stations broadcasting the rescue response messages as a rescue base station, and requests the rescue base station to substitute for it to request the basic configuration parameter information of the base station from a Dynamic Host Control Protocol (DHCP) server; and the rescue base station transmits the requested basic configuration parameter information of the base station to the base station. The present invention is beneficial to decrease the manual intervention and reduce the operation cost, effectively ensures that the self-configuration process and the subsequent Self-Organized Network (SON) process are performed favorably and greatly enhances the robustness of the base station itself and the SON process.

Description

Self-healing method for obtaining basic configuration parameters by base station self-configuration process and base station

Technical field

The present invention relates to the field of wireless communications, and in particular, to a self-healing method and a base station for obtaining basic configuration parameters in a self-configuration process of a base station in a Long Term Evolution (LTE) system self-organizing network.

Background technique

In future networks, the coexistence of different networks will make the network more complex. The configuration and optimization of a large number of wireless parameters and data will make the work of network planning and network optimization personnel more complicated, and operators hope to reduce operating costs and manual intervention. Therefore, in the standardization phase of LTE networks, the concept of Self-organized Network (SON) is proposed by mobile operators. The main idea is to realize some autonomic functions of the network to reduce manual intervention. In this context, the SON feature of the Evolved UMTS Terrestrial Radio Access Network (E-UTRAN) system of the Universal Mobile Telecommunications System (UMTS) is used as the third generation partner. One of the important research directions of the 3 ^M Generation Partnership Project (3 GPP).

SON in LTE system has four functions: self-configuration, self-optimization, self-healing and self-planning. The main functions of the process and implementation of the self-configuration and self-optimization process are shown in Figure 1. After the base station, the Evolved Node B (eNB) is powered on, enters the self-configuration, that is, the pre-operation state, and executes the steps of 110: basic startup and 120: initial wireless parameter configuration, and then enters the operational state and executes. Step 130: Optimization and adjustment. In the 110: basic startup phase of the self-configuration process, at least: 111: IP address configuration and operation and maintenance center (OMC) server detection, 112: node authentication, 113: establishment and evolution grouping The core network (Evolved Packet Core Network, EPC for short) connection, 114: eNB software and download of operating parameters, etc.; in the self-configuration process 120: initial wireless parameter configuration phase includes at least: 121: neighbor cell list Establish and 122: Coverage/capacity related parameter configuration and other parts; In the self-optimization process 130: The optimization and adjustment phase includes at least: 131: optimization of neighbor cell list and 132: coverage/capacity control and other parts. When a node is added to the network, the node first establishes an initial logical connection with the OMC server to complete the authentication and obtain the information needed to properly connect to the network. In order to establish an initial connection with the OMC server, the node first needs to know some basic parameter information, such as the node's own IP address, gateway address, Domain Name System (DNS) server address, and so on. In order to support self-configuration and self-optimization, these basic parameter information should be dynamically obtained. The method for obtaining basic parameter information is basically implemented by Dynamic Host Control Protocol (DHCP).

The acquisition and configuration of basic parameter information including nodes, such as base stations (eNBs) and their own IP addresses, is the most basic premise of the self-configuration process of the base station and the entire SON process. If the basic parameter information acquisition fails, the subsequent SON process will not be able to be performed, and currently it is only time-consuming and labor-intensive to solve the problem by the professional on the station. Therefore, the robustness of the acquisition of basic parameter information from the self-configuration phase becomes a very important aspect of the base station SON process. Summary of the invention

The technical problem to be solved by the present invention is to provide a self-healing method and a base station for acquiring basic configuration parameters in a self-configuration process of a base station, so as to solve the defect that the base station cannot automatically recover after acquiring the basic configuration parameter information of the prior art.

To solve the above problem, the present invention provides a self-healing method for obtaining basic configuration parameters in a self-configuration process of a base station, including:

If the base station fails to request its own basic configuration parameter information during the self-configuration process, the base station sends a help-seeking broadcast message to the neighboring base station;

After receiving the call for help broadcast message, the neighboring base station broadcasts a rescue response message to the base station and other neighboring base stations if it has successfully obtained basic configuration parameters;

Receiving, by the base station, the rescue response message of all neighboring base stations, selecting one of all neighboring base stations that broadcast the rescue response message as a rescue base station, and requesting the rescue base station to request the base station from the dynamic host configuration protocol DHCP server Basic configuration parameter information;

The rescue base station sends the requested basic configuration parameter information of the base station to the base station. Preferably, after the step of receiving, by the neighboring base station, the help probe broadcast message, the method further includes:

If the neighboring base station determines that it has not obtained the basic configuration parameters, it discards the help probe broadcast message.

Preferably, the step of the base station transmitting the help probe broadcast message further includes:

Start the wait response timer;

If the rescue response message is not received after the wait response timer expires, the help probe broadcast message is resent.

Preferably, the step of the base station selecting one of the neighboring base stations that broadcast the rescue response message as the rescue base station includes:

The base station selects, from among all the neighboring base stations that broadcast the rescue response message, the base station that first receives the adjacent base station corresponding to the rescue response message as the rescue base station; or

And the base station selects, as a rescue base station, a neighboring base station corresponding to a message with a source IP address of a maximum or a minimum of all the rescue response messages received by the base station from all neighboring base stations that broadcast the rescue response message; or

The base station randomly selects one of all neighboring base stations broadcasting the rescue response message as a rescue base station.

Preferably, the step of the base station requesting the rescue base station to request basic configuration parameter information of the base station from the DHCP server includes:

The base station sends a rescue request message, which carries the unique identifier information of the base station; after receiving the rescue request message, the rescue base station initiates a DHCP request to the DHCP server, where the unique identifier information of the base station is carried;

After receiving the DHCP request, the DHCP server allocates basic configuration parameter information to the base station according to the unique identification information of the base station, and sends the allocated basic configuration parameter information to the rescue base station.

Preferably, the step of the neighboring base station transmitting the rescue response message to the base station and the other neighboring base stations further includes: adding the identifier label information of the neighboring base station itself to the rescue response message, And the identifier label information is recorded locally; wherein the identifier label information is used to uniquely identify the neighboring base station;

The rescue request message sent by the base station further carries the identifier label information of the rescue base station;

After the rescue base station receives the rescue request message, initiate the message to the DHCP server.

The steps of the DHCP request include:

Determining whether the identification label information of the base station has been recorded locally; if the identification label information of the base station is not recorded, discarding the rescue request message; if the identification label information of the base station is recorded, determining the identification label information of the local record and Whether the identification label information carried in the rescue request message is consistent; if the locally recorded identification label information is consistent with the identification label information carried in the rescue request message, it is known that the self-requesting base station is initiated by the DHCP server. And the DHCP request; if the locally recorded identification label information is inconsistent with the identification label information carried in the rescue request message, discarding the rescue request message.

Preferably, the step of the base station transmitting the salvage detection broadcast message further includes: the base station setting the running state value of the base station to indicate that it is in a waiting for rescue state;

After receiving the rescue response message broadcast by the neighboring base station, the other neighboring base station determines whether the running state value of the neighboring base station indicates that it is in a waiting state; if the running state value of the neighboring station indicates that it is in a waiting state, it indicates that it In order to save the base station, the step of selecting the rescue base station is performed; if the running status value of the base station is not indicating that it is in the waiting for rescue state, the rescue response message is discarded.

Preferably, the above method further includes:

The base station presets a threshold for the number of calls for help;

If the rescue base station fails to replace the base station to request the basic configuration parameter, the rescue base station sends a notification message carrying the indication of the request failure identifier to the base station;

After receiving the notification message, the base station determines whether the number of times of the rescue has reached the threshold of the number of times of the help; if the number of times of the rescue has reached the threshold of the number of calls, the base station restarts, and after the restart, the station is restarted. The self-configuration process is performed; if the number of times of the help does not reach the threshold value of the number of calls for help, the step of transmitting the call for help broadcast message is re-executed. The invention also provides a base station, comprising: a dynamic host configuration protocol DHCP request module, a help probe sending processing module, a help message receiving processing module, a rescue response sending processing module, a rescue response receiving processing module, a rescue request sending processing module, and a rescue a request receiving processing module, a basic parameter information sending module, and a basic parameter information acquiring module; wherein

If the base station acts as a rescue base station, then

The DHCP requesting module is configured to: if the basic configuration parameter information of the base station itself is failed to be requested by the DHCP server, send a help-seeking command to the help-being detection sending processing module;

The help probe sending processing module is configured to: after receiving the help request, send a help probe broadcast message to the neighboring base station;

The rescue response receiving processing module is configured to: receive a rescue response message broadcasted after the neighboring base station receives the help probe broadcast message, and select one of all neighboring base stations that broadcast the rescue response message as a rescue base station, and Notifying the rescue request sending processing module; the rescue request sending processing module is configured to: after receiving the notification of the rescue response receiving processing module, send a rescue request message to the rescue base station;

The basic parameter information obtaining module is configured to: receive the basic configuration parameter information of the rescue base station requested by the rescue base station according to the received rescue request message to the DHCP server;

If the base station acts as a rescue base station,

The help message receiving processing module is configured to: after receiving the help probe broadcast message, if the basic configuration parameter is successfully obtained, the rescue response sending module sends a rescue response command;

The rescue response sending processing module is configured to: after receiving the rescue response command, broadcast a rescue response message to the rescue base station and other neighboring base stations;

The rescue request receiving processing module is configured to: after receiving the rescue request message sent by the help requesting base station according to the rescue response message received by the help requesting base station, send a DHCP request to the DHCP requesting module;

The DHCP requesting module is further configured to: after receiving the DHCP request, request the basic configuration parameter information of the help requesting base station to the DHCP server instead of the help requesting base station; The basic parameter information sending module is configured to: send basic configuration parameter information of the help requesting base station requested by the DHCP requesting module to the help-seeking base station.

Preferably, the help probe sending processing module is further configured to start a wait response timer; and if it is detected that the wait response timer expires, the rescue response receiving processing module still does not receive the rescue response message, Resending the distress probe broadcast message.

Preferably, the rescue request message sent by the rescue request sending processing module carries the unique identification information of the base station;

Then, the rescue request receiving processing module is further configured to: after receiving the rescue request message, carry the unique identifier information of the help requesting base station to the DHCP request initiated by the DHCP server.

Preferably, the rescue response transmission processing module is further configured to: add the identification label information of the base station itself to the rescue response message broadcasted to the help base station and other neighboring base stations, and record the identification label information locally; The identifier label information is used to uniquely identify the base station;

The rescue request message sent by the rescue request sending processing module further carries the identifier label information of the rescue base station;

The rescue request receiving processing module is configured to: after receiving the rescue request message, determine whether the locality has recorded the identification label information of the base station; if the identification label information of the base station is not recorded, discard the rescue request If the identifier information of the local base station is recorded, it is determined whether the identification label information of the local record is consistent with the identification label information carried in the rescue request message; if the locally recorded identification label information is carried in the rescue request message If the identification label information is consistent, it is learned that it is the rescue base station, and the DHCP request is initiated to the DHCP server; if the locally recorded identification label information is inconsistent with the identification label information carried in the rescue request message, the discard is discarded. The rescue request message.

Preferably, the help probe sending processing module is further configured to set an operating state value of the base station to indicate that it is in a waiting state;

The rescue response receiving processing module is further configured to: after receiving the rescue response message broadcast by the neighboring base station, determine whether the running status value of the base station indicates that it is in a waiting for rescue state; The self-operating state value indicates that it is in the waiting for rescue state, and indicates that it is the help-seeking base station, and performs the selection of the rescue base station; if the operating state value of the self does not indicate that it is in the waiting for rescue state, the rescue response message is discarded.

After the invention is used, the manual intervention is reduced, the operation cost is reduced, the self-configuration process and the subsequent SON process can be effectively ensured, and the robustness of the base station itself and the SON process can be greatly enhanced. BRIEF abstract

1 is a schematic diagram of a self-configuration and self-optimization process of a base station SON in the prior art;

2 is a flow chart of a self-healing method for obtaining basic configuration parameters in a self-configuration process of a base station according to an embodiment of the present invention;

3 is a flowchart of processing of a neighboring base station in an embodiment of the present invention;

4 is a structural diagram of a base station capable of realizing a self-healing function according to an embodiment of the present invention;

FIG. 5 is another structural diagram of a base station capable of realizing a self-healing function according to an embodiment of the present invention; FIG.

6 is a schematic flow chart of an application example 1 of the present invention;

Fig. 7 is a flow chart showing the application example 2 of the present invention. Preferred embodiment of the invention

A description of a specific embodiment of the present invention relates to an LTE ad hoc network system, including at least

DHCP server (DHCP Server), OMC server, and multiple base stations. It involves the interaction process between the base station and the DHCP server and the OMC server, but it is not the focus of the present invention, so only a very brief description or only a reference is made; the invention is further illustrated by the interaction process between multiple base stations. The self-healing method of the self-configuration process.

The basic idea of the method of the present invention is: if the base station fails to request its own basic parameter information through DHCP during the self-configuration process, it sends a SOS probe broadcast message; after receiving the neighboring base station, it has successfully obtained the basic configuration parameters. Responding to the above base station with a rescue response message; After receiving the base station, the base station selects one of the neighboring base stations that respond to the rescue source response message as the rescue base station, and requests the rescue base station to perform the DHCP request on behalf of the base station; the rescue base station sends the requested basic configuration parameters to the base station.

Preferably, as shown in FIG. 2, in combination with the processing flow of each adjacent base station as shown in FIG. 3, the self-healing method provided by the present invention includes the following steps:

Steps 201 to 202: The base station is powered on, and sends a DHCP request to the DHCP server, where the DHCP request carries the unique identification information of the base station.

The unique identifier information of the base station is an identifier that can represent the entire device asset information of the base station, and the base station carries the unique identifier information in the DHCP option 61, that is, the client-identifier that carries the unique identifier of the DHCP client. Perform a DHCP request and interact with the DHCP server to obtain basic configuration parameter information.

Step 203: Is the DHCP request successful? If the DHCP request fails, go to step 204, otherwise, go to step 215;

Step 204: The base station sends a SOS detection broadcast message to perform a salvage detection, and starts a wait response timer, and sets an operation state value of the base station to indicate that the waiting for rescue state is entered; as shown in FIG. 3:

Step 301: The neighboring base station receives the help probe broadcast message sent by the helper base station.

Step 302, the neighboring base station determines whether it satisfies the condition of the rescue base station, that is, whether it has obtained the basic configuration parameters, if the condition as the rescue base station is satisfied, step 303 is performed, otherwise step 305 is performed;

Step 303: The neighboring base station records its own identification label.

Step 304: The neighboring base station sends a rescue response broadcast message carrying its own identification tag information to the base station to perform a rescue response, and the partial operation of the adjacent base station ends;

Step 305: Discard the help probe broadcast message, and the part of the operation is terminated by the neighboring base station.

The identifier label information of the neighboring base station is used to uniquely identify the neighboring base station, and the identifier label information may be an IP address or a hardware MAC address of the neighboring base station itself, or may be utilized. A tag generated by a random number generation algorithm may also be a unique identifier of the neighboring base station itself, etc., wherein the unique identification information of the neighboring base station is basically pre-cured, such as an electronic serial number of the adjacent base station;

Preferably, the neighboring base station in step 302 determines whether the condition of the base station as the rescue base station is: the neighboring base station determines whether it has successfully obtained basic parameter information including its own IP address, etc. from the DHCP server; if not, it considers It does not meet the conditions of the rescue base station itself; if it has succeeded, it considers itself to be a condition for the rescue base station.

Step 205: Determine whether the rescue base station receives the rescue response message sent by the neighboring base station before the waiting response timer expires. If the rescue response message is received, step 206 is performed, otherwise, step 204 is returned;

Step 206: Select a rescue base station according to the established policy, that is, select one of the neighboring base stations that send the rescue response message as the rescue base station;

Step 207: Send a broadcast message carrying the identifier label information of the selected rescue base station and the unique identifier information of the selected base station to the neighboring base station (ie, the rescue base station);

Step 208: Enter a state of waiting for basic configuration parameters.

It can be seen from the above step 304 that if the neighboring base station itself satisfies the condition as the rescue base station, it is a broadcast rescue response message, and other neighboring base stations in the non-waiting rescue state directly discard the processing after receiving the rescue response message, such as Steps 306 to 307 in FIG.

In the foregoing step 206, the method for the rescue base station to select the rescue base station may have multiple methods: for example, the neighboring base station corresponding to the first received rescue response message may be selected as the rescue base station; or all the rescue response messages received are received. The neighboring base station with the largest or smallest source IP address of the selected packet is used as the rescue base station; and a neighboring base station may be randomly selected as the rescue base station in the received rescue response.

As shown in FIG. 3, in the above step 207, the base station sends a broadcast message, so as shown in FIG. 3: Step 308: The neighboring base station receives the identifier label information of the selected rescue base station and the unique identifier information of the rescue base station, which is sent by the requesting base station. Broadcast message, that is, the request for help message; Step 309, the neighboring base station determines whether it has recorded its own identification label, if it has not recorded the identification label, step 316 is performed, otherwise, step 310 is performed; Step 310: Obtain an identifier label of the rescue base station carried in the request message.

Step 311: The neighboring base station compares the acquired identification label of the rescue base station with its own identification label; if the identification label does not match, step 316 is performed; otherwise, if it is known that it is the rescue base station, step 312 is further performed;

Step 312: Acquire the unique identification information of the help-seeking base station in the received request message. Step 313: The rescue base station carries the unique identification information of the help-seeking base station in the DHCP message option 61, and requests the rescue base station to perform a DHCP request.

Step 314: Perform message interaction with the DHCP server to complete the DHCP process. Step 315: The selected rescue base station sends a broadcast message carrying the unique identification information of the help-seeking base station and the DHCP request result information of the help-seeking base station, and the neighboring base station ends the operation of the part. ;

The result of the request in the step 315 carries the identification information indicating that the DHCP request succeeds or fails. In addition, if the request is successful, the DHCP request result information also carries the basic configuration parameter information of the requested rescue base station.

Step 316: Discard the broadcast message directly, and the part of the operation is terminated by the neighboring base station.

Step 209: The helper base station receives a broadcast message that carries the help station base station unique identifier information and the help base station DHCP request result information sent by the rescue base station, and processes the result information.

Step 210: After receiving the foregoing message sent by the rescue base station, the help-seeking base station that is in the state of waiting for the basic configuration parameter extracts the unique identifier information of the base station carried in the message;

Step 211: The help base station compares the extracted base station unique identifier information with its unique identifier information to determine whether it matches. If the two do not match, the broadcast message is discarded; otherwise, step 212 is performed;

Step 212: Extract the DHCP result identification information.

Step 213: Determine whether the identifier indicates success. If the identifier indicates success, step 214 is performed, if the identifier indicates failure, step 217 is performed;

Step 214: Extract basic parameter configuration information including the IP address of the help base station itself; Step 215 216, perform configuration, perform a subsequent SON process, and end.

Step 217: The rescue base station determines whether the number of requests for help has reached a predetermined threshold, if not, Then, step 204 is performed again to start a new round of help-seeking action; otherwise, step 218 is performed; step 218, the rescue base station itself restarts, and after the startup, the basic configuration parameter request is performed, that is, step 202 is performed.

As shown in FIG. 3, it can be seen from the foregoing step 315 that the selected rescue base station transmits a broadcast message carrying the unique identification information of the help base station and the DHCP request result information of the help base station, and if other neighboring base stations are in a non-waiting rescue state. Then, after receiving the configuration parameter information sent by the rescue base station, the discarding process is directly performed, as shown in step 317 to step 318 in FIG.

In addition, the device involved in the self-healing method provided by the present invention is implemented on a base station, and the base station can be either a help-seeking base station or a rescue base station, but the functional modules in the base station used in the base station are different, in this embodiment. The base station is an overall device including the functions of the rescue base station and the rescue base station, as shown in the figure.

As shown in FIG. 4, the base station includes the following components: a dynamic host configuration protocol (DHCP) request module 401, a help probe transmission processing module 402, a help message receiving processing module 403, a rescue response sending processing module 404, a rescue response receiving processing module 405, The rescue request sending processing module 406, the rescue request receiving processing module 407, the basic parameter information transmitting module 408, and the basic parameter information acquiring module 409.

The DHCP requesting module 401 is configured to request the DHCP server to acquire the basic parameter information of the base station itself, and is further configured to send, as a module in the help requesting base station, the help probe sending processing module 402, when the basic parameter information fails to be acquired. Sending a help-seeking command; further configured to: when the base station serves as a rescue base station, request the basic parameter information of the help-seeking base station to the DHCP server instead of the help-seeking base station.

The help probe transmission processing module 402 is configured to send a rescue probe broadcast message after receiving the help command.

When the base station is used as the neighboring base station of the helper base station, the help message receiving processing module 403 is configured to, after receiving the help probe broadcast message, determine that the basic configuration parameter has been successfully obtained, The rescue response transmission processing module 404 initiates a rescue response command.

The rescue response sending processing module 404 is configured to send a rescue response message after receiving the rescue response command. When the base station is the help base station, the rescue response receiving processing module 405 is configured to receive the rescue response message, select one of all neighboring base stations that reply to the rescue response message as a rescue base station, and notify the The rescue request is sent to the processing module 406.

The rescue request transmission processing module 406 is arranged to send a rescue request message to the rescue base station after receiving the above notification.

When the base station is used as the rescue base station, the rescue request receiving processing module 407 is configured to, after receiving the rescue request message, replace the basic data of the help request base station with the DHCP server instead of the help request base station. .

When the base station is used as the rescue base station, the basic parameter information sending module 408 is configured to send the requested basic configuration parameter information of the base station to the help substation base station.

The basic parameter information obtaining module 409 is configured to receive basic configuration parameter information sent by the basic parameter information sending module 408, when the base station is used as the calling base station.

The base station may further include a basic parameter information configuration module 410 configured to perform configuration of basic parameter information including the base station's own IP address.

Specifically, in order to more clearly explain the composition of the base station, the base station is divided into a helper base station and a neighboring base station to describe the functional modules therein, as shown in FIG. 5.

If the base station is a helper base station, the method includes: a DHCP request module 510, a help probe transmission processing module 512, a rescue response receiving processing module 515, a rescue request transmission processing module 516, a basic parameter information obtaining module 519, and a basic parameter information configuration module 520.

The DHCP requesting module 510 is configured to: if the basic configuration parameter information of the base station itself is failed to be sent to the DHCP server, send a help command to the help probe sending processing module 512; the help probe sending processing module 512 is configured to: After receiving the help-seeking command, sending a help-seeking broadcast message to the neighboring base station; the rescue response receiving processing module 515 is configured to: receive a rescue response message broadcasted by the neighboring base station after receiving the help-seeking broadcast message, and One of the neighboring base stations broadcasting the rescue response message is selected as the rescue base station, and the rescue request transmission processing module 516 is notified; the rescue request transmission processing module 516 is configured to: receive the rescue response receiving processing module 515 After the notification, sending a rescue request message to the rescue base station; and the basic parameter information obtaining module 519 is configured to: receive the rescue base station according to The received rescue request message is the basic configuration parameter information of the help-seeking base station requested by the DHCP server.

If the base station is a rescue base station, the method includes: a DHCP request module 530, a help message receiving processing module 513, a rescue response sending processing module 514, a rescue request receiving processing module 517, a basic parameter information sending module 518, and a basic parameter information configuring module 540.

The DHCP requesting module 530 is configured to: request the DHCP server to obtain the basic parameter information of the base station itself; the help message receiving processing module 513 is configured to: after receiving the help probe broadcast message, if the user has successfully obtained the basic information The configuration parameter sends a rescue response command to the rescue response sending processing module 514. The rescue response sending processing module 514 is configured to: after receiving the rescue response command, broadcast a rescue response message to the rescue base station and other neighboring base stations. The rescue request receiving processing module 517 is configured to: after receiving the rescue request message sent by the help requesting base station according to the rescue response message received by the help requesting base station, send a DHCP request to the DHCP requesting module 530; the DHCP request The module 530 is further configured to: after receiving the DHCP request, request the basic configuration parameter information of the help-seeking base station to the DHCP server instead of the help-seeking base station; and the basic parameter information sending module 518 is configured to: The base of the help base station requested by the DHCP request module 530 Configuration parameter information transmitted to the base station for help. In combination with the base stations shown in Figures 4 and 5 above, the following preferred functional settings are also included.

Preferably, the help probe transmission processing module is further configured to start a wait response timer when transmitting the help probe broadcast message. When the base station is used as the help base station, the rescue response receiving processing module sends a heavy weight to the help probe sending processing module if the rescue response message is not received when the waiting response timer expires. Send a command. The help probe sending processing module is configured to resend the help probe broadcast message after receiving the resend command.

More preferably, the help probe sending processing module may be further configured to start a wait response timer; and if the wait response timer expires, the rescue response receiving processing module still does not receive the rescue response message. And resending the help probe broadcast message.

In addition, the rescue request message may carry unique identification information of the help base station. The rescue request receiving processing module may be further configured to: after receiving the rescue request message, initiate a DHCP request to the DHCP server, where the unique identification information of the help requesting base station is carried. Preferably, the rescue response sending processing module may further be configured to add the identification label information of the base station itself to the rescue response message that is replied, and record the identification label information locally; wherein the identifier label information is used by Uniquely identifies the base station. The rescue request message further carries identification tag information of the rescue base station.

Then, the rescue request receiving processing module is configured to: after receiving the rescue request message, first determine whether the identification label information of the local base station has been recorded locally; if not, discard the rescue request message; otherwise, Whether the identification label information used to determine the local record is consistent with the identification label information carried in the rescue request message; if they are consistent, it is learned that it is the rescue base station, initiates the DHCP request to the DHCP server, and performs subsequent If the process is inconsistent, the rescue request message is discarded.

The help probe sending processing module may be further configured to set the running state value of the base station to indicate that it is in a waiting for rescue state when transmitting the help probe broadcast message.

The rescue response receiving processing module may be further configured to: after receiving the rescue response message, determine whether the running status value of the base station indicates that it is in a waiting state; if yes, perform a selection and subsequent process of the rescue base station; otherwise, Discard the rescue response message.

In the following, further description will be made using two application examples of the invention.

Application example 1 :

The first embodiment includes three base stations: base station A (newly powered base station), base station B (powered before base station A, has been operating normally), and base station C (powered after base station A). The technical solution of the present invention will be further described below by using the application example 1 of the present invention and in conjunction with FIG.

S601: The base station A is newly powered on, and performs initial startup; at this time, the base station B has successfully obtained the basic configuration parameter information, and obtains contact with the OMC, and operates normally; the base station C has not been powered on;

S602: The message exchange between the base station A and the DHCP server is performed, and the DHCP result fails. At this time, the base station C starts to be powered on.

S603: The base station A enters a self-healing process, starts a waiting rescue response timer, and enters a waiting for rescue state.

S604: The base station A sends a help probe broadcast message to the base station B and the base station C, and performs a help probe detection. S605: Both the base station B and the base station C receive the help probe message sent by the base station A. The base station B determines its own state and finds that it has successfully interacted with the DHCP server, that is, it can consider itself as a rescue base station, and the base station B uses its own MAC address as its own. Identification label (Note: In this example, the method of using its own MAC address as its own identification label) and recording and saving locally;

The base station C determines its own state, and finds that it has not successfully obtained the basic configuration parameter information from the DHCP server, and discards the help probe broadcast message;

S606: The base station B sends a rescue response message including the identifier information of the own identity, and responds to the base station A. At this time, the DHCP request process of the base station C ends, the DHCP request succeeds, the basic parameter information is configured, and the OMC is contacted, and the SON is followed. Process

S607: The base station A receives the rescue response message sent by the base station B in the waiting time, extracts the identifier label of the base station B, and saves it, and selects the base station B as the rescue base station;

The base station C receives the rescue response message in a non-waiting rescue state and directly discards it.

S608: The base station A sends a rescue request broadcast message carrying its own unique identification information and the identification information of the rescue base station B, and enters a waiting basic parameter configuration state;

S609: The base station B receives the broadcast message sent by the base station A, and finds that the locality has the identification label information, so as to further extract the identification information of the rescue base station in the message, and compares it with its own identification label; the base station B finds that the identifier label matches. , confirming that it is the rescue base station, thereby further extracting the unique identification information of the rescue base station A and saving it locally;

The base station C receives the broadcast message that is sent by the base station A and contains the unique identifier information, and displays that the local device does not have the identifier information and discards the broadcast message.

S610: The rescue base station B carries the unique identification information of the rescue base station A, interacts with the DHCP server, performs a DHCP request for the base station A, and the DHCP request succeeds;

S611: The base station B sends a broadcast message carrying the unique identification information of the rescue base station A, the result information indicating that the DHCP request is successful, and the basic configuration parameter information of the requested base station A;

S612: The rescue base station A receives the basic configuration parameter broadcast message sent by the rescue base station B while waiting for the basic configuration parameter state, first extracts the unique identification information of the base station, compares with the unique identification information of the base station, and the result matches; further extracts the DHCP request result information, Found that the request was successful, and then extracted Basic configuration parameter information;

The base station C receives the basic configuration parameter broadcast message in a non-waiting rescue state, and directly discards it;

S613: The base station A completes the configuration according to the obtained basic configuration parameter information, and performs a SON subsequent process.

Application example 2:

The present embodiment 2 includes four base stations: a base station A1 (new power-on base station), a base station A2 (new power-on base station), a base station D (new power-on base station, and power-on after base stations A1 and A2), and a base station E (new Power up the base station, and power up after base stations A1 and A2). The contents of the present invention will be further described below with reference to Application Example 2 of the present invention and in conjunction with FIG.

S701: The base stations A1 and A2 are newly powered on, and the initial startup is performed; at this time, both the base station D and the base station E are not powered on;

S702: The message exchange between the base stations A1 and A2 and the DHCP server fails, and the DHCP result fails.

S703: The base stations A1 and A2 enter the self-healing process respectively, start the waiting response timer, and enter the waiting for rescue state. The base stations A1 and A2 both send a help-seeking broadcast message to perform a salvage detection; at this time, the base station D and the base station E start to be powered on;

S704: The base station D and the base station E receive the help probe messages sent by the base stations A1 and A2, determine their respective states, and find that they have not successfully obtained the basic configuration parameter information from the DHCP server, and discard the help probe broadcast message.

The base station A1 receives the help probe message sent by the base station A2, determines its own state, finds that it has not successfully obtained the basic configuration parameter information from the DHCP server, and discards the call for help broadcast message. Similarly, the base station A2 receives the call for help from the base station A1. Detecting a broadcast message and discarding the broadcast message;

S705: The base stations A1 and A2 both wait for timeout, do not receive any response message, are still waiting for the rescue state, restart the timer, and send the help probe broadcast message again;

S706: At this time, both the base station D and the base station E complete the interaction with the DHCP server, and successfully obtain the basic configuration parameter information, and have been configured and operated normally;

S707: The base station D and the base station E receive the help probe broadcast message sent by the base stations A1 and A2, determine their respective states, and find that they have successfully interacted with the DHCP server, and the judgment result considers itself It can be used as a rescue base station; base station D and base station E use their unique identification information as their own identification label (Note: in this example, the base station unique identifier is used as its own identification label) and record and save locally;

Each of the base stations A1 and A2 receives the call for help broadcast message of the other party, and discards the broadcast message directly because it has not succeeded in the DHCP request.

S708: The base station D and the base station E both send a rescue response message carrying the identifier information of the identity;

S709: The base station A1 first receives the rescue response message sent by the base station D, extracts the identifier label information of the base station D, and saves it, and selects the base station D as the rescue base station. (Note: the base station corresponding to the rescue response that is the first to arrive is used as the rescue base station. Selecting a policy); the base station A1 receives the rescue response message sent by the base station E, and discards it;

The base station A2 first receives the rescue response message sent by the base station E, extracts the identification label information of the base station E and saves it, and selects the base station E as the rescue base station; the base station A2 receives the rescue response message sent by the base station D, and discards it;

The base station D receives the rescue response message sent by the base station E in the non-waiting rescue state, and directly discards it; likewise, the base station E receives the rescue response message sent by the base station D in the non-waiting rescue state, and directly discards it.

S710: The base station A1 sends a broadcast message carrying its own unique identification information and the identifier information of the rescue base station D, and enters a waiting basic parameter configuration state;

The base station A2 sends a broadcast message carrying its own unique identification information and the identification information of the rescue base station E, and enters the waiting basic parameter configuration state.

S711: The base station D receives the broadcast message sent by the base station A1, and finds that the locality has the identification label information, so as to further extract the rescue base station identification label information in the message, and compares it with its own identification label; the base station D finds that the identification label matches. Confirming that it is the rescue base station, thereby further extracting the unique identification information of the rescue base station A1 and storing it locally; the base station D receives the broadcast message sent by the base station A2, and checks that the local identification label information is found, thereby further extracting the information in the message. Rescuing the base station identification label information, compared with its own identification label; the base station D finds that the identification label does not match, discarding the broadcast message;

The base station E receives the broadcast message sent by the base station A2, and finds that it has local identification label information, so as to further extract the identification information of the rescue base station in the message, and compares it with its own identification label; the base station E finds that the identification label matches, confirms I am the rescue base station, which further Obtaining the unique identification information of the rescue base station A2 and storing it locally; the base station E receives the broadcast message sent by the base station A1, and finds that it has local identification label information, thereby further extracting the identification information of the rescue base station in the message, and its own The identification label is compared; the base station E finds that the identification label does not match, and discards the broadcast message;

The base stations A1 and A2 receive each other's broadcast messages carrying their own unique identification information and the identification information of the rescue base station identification labels, and view the discovery that they have no identification label information, and discard the broadcast message.

S712: The base station D carries the unique identification information of the rescue base station A1, and interacts with the DHCP server to complete the DHCP interaction process, and the DHCP result fails.

The base station E carries the unique identification information of the rescue base station A2, and interacts with the DHCP server to complete the DHCP interaction process, and the DHCP result is successful.

S713: The base station D sends a broadcast message carrying the unique identifier information of the help base station A1 and the failure information of the DHCP request result;

The base station E transmits a broadcast message carrying the unique identification information of the rescue base station A2, the success of the DHCP request result, and the basic configuration parameter information of the base station A2.

S714: The rescue base station A1 receives the broadcast message containing the failure of the DHCP request result sent by the rescue base station D while waiting for the basic configuration parameter state, first extracts the unique identifier information of the base station, compares with the unique identification information of the base station, and the result matches; further extracts the DHCP request. The result information, the request is found to be unsuccessful; further determining whether the number of salvage times is reached (for example, the preset is 5 times), and the comparison finds that the value is less than the threshold value, and a new round of the rescue operation is performed;

The helper base station A1 receives the broadcast message containing the result of the DHCP request sent by the rescue base station E while waiting for the basic configuration parameter state, and first extracts the unique identifier information of the base station, and compares with the unique identifier information of the base station, the result does not match, and the broadcast message is directly discarded. ;

The helper base station A2 receives the broadcast message containing the result of the DHCP request successfully sent by the rescue base station E while waiting for the basic configuration parameter state, first extracts the unique identifier information of the base station, and compares with the unique identification information of the base station, and the result matches; further extracts the DHCP request result information. , the request is found to be successful, and then the basic configuration parameter information is extracted;

The helper base station A2 receives the broadcast message containing the result of the DHCP request sent by the rescue base station D while waiting for the basic configuration parameter state, and first extracts the unique identifier information of the base station, and the unique identifier of the base station. If the information is compared, the result does not match, and the broadcast message is directly discarded;

The rescue base station D and the rescue base station E respectively receive the broadcast message of the basic configuration parameter sent by the other party in the non-waiting rescue state, and directly discard it.

S715: The base station A2 completes the configuration according to the obtained basic configuration parameter information, and performs a SON subsequent process.

In summary, the self-healing method of the DHCP request by the neighboring base station is provided as a basic premise of the base station SON self-configuration process, that is, the basic configuration parameter information including the base station's own IP address is provided. The guarantee makes the subsequent SON process go smoothly, which greatly enhances the robustness of the base station itself and the self-organizing network.

One of ordinary skill in the art will appreciate that all or a portion of the steps above may be accomplished by a program to instruct the associated hardware, such as a read-only memory, a magnetic disk, or an optical disk. Alternatively, all or part of the steps of the above embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module/unit in the above embodiment may be implemented in the form of hardware or in the form of a software function module. The invention is not limited to any specific form of combination of hardware and software.

Industrial applicability

The self-healing method for obtaining the basic configuration parameters and the base station by the base station self-configuration process of the present invention, the self-healing method for the DHCP request by the neighboring base station, the basic premise of the self-configuration process of the base station SON is the basic configuration parameter including the IP address of the base station itself. The acquisition of information provides a strong guarantee for the subsequent SON process to proceed smoothly, which greatly enhances the robustness of the base station itself and the self-organizing network.

Claims

Claim

A self-healing method for obtaining basic configuration parameters in a self-configuration process of a base station, comprising: sending, by the base station, a help-seeking broadcast message to a neighboring base station if the basic configuration parameter information of the base station fails to be requested in the self-configuration process;

The rescue base station sends the requested basic configuration parameter information of the base station to the base station.

2. The method according to claim 1, wherein, after the step of the neighboring base station receiving the call for help broadcast message, the method further includes:

The method of claim 1, wherein the step of the base station transmitting the help probe broadcast message further comprises:

Start the wait response timer;

4. The method according to claim 1, wherein the step of the base station selecting one of all neighboring base stations broadcasting the rescue response message as the rescue base station comprises:

The base station selects, as a rescue base station, a neighboring base station corresponding to a message with the largest or smallest source IP address of all the rescue response messages received by the base station from all the neighboring base stations that broadcast the rescue response message; or The base station randomly selects one of all neighboring base stations that broadcast the rescue response message as a rescue base station.

The method according to any one of claims 1 to 4, wherein the step of the base station requesting the rescue base station to request basic configuration parameter information of the base station from the DHCP server includes: sending, by the base station, a rescue request message And carrying the unique identification information of the base station; after receiving the rescue request message, the rescue base station sends a DHCP request to the DHCP server, where the unique identifier information of the base station is carried;

6. The method of claim 5, wherein

The step of the neighboring base station transmitting the rescue response message to the base station and the other neighboring base stations further includes: adding the identifier label information of the neighboring base station to the rescue response message, and locally recording the identifier label information; The identifier label information is used to uniquely identify the neighboring base station;

After the rescue base station receives the rescue request message, the step of initiating a DHCP request to the DHCP server includes:

The method according to any one of claims 1 to 4, wherein the step of the base station transmitting the salvage detection broadcast message further comprises: the base station setting its own running state value to indicate that it is waiting for rescue Aid status; then, also includes:

8. The method of claim 1 further comprising:

The base station presets a threshold for the number of calls for help;

After receiving the notification message, the base station determines whether the number of times of the rescue has reached the threshold of the number of times of the help; if the number of times of the rescue has reached the threshold of the number of calls, the base station restarts, and after the restart, the station is restarted. The self-configuration process is performed; if the number of times of the help does not reach the threshold value of the number of calls for help, the step of transmitting the call for help broadcast message is re-executed.

9. A base station, comprising: a dynamic host configuration protocol DHCP request module, a help probe sending processing module, a help message receiving processing module, a rescue response sending processing module, a rescue response receiving processing module, a rescue request sending processing module, and a rescue request receiving processing Module, basic parameter information sending module and basic parameter information acquiring module; wherein

If the base station acts as a rescue base station, then

The basic parameter information obtaining module is configured to: receive the rescue base station according to the received location Determining the rescue request message as the basic configuration parameter information of the help base station requested by the DHCP server;

If the base station acts as a rescue base station,

The DHCP requesting module is further configured to: after receiving the DHCP request, request the basic configuration parameter information of the help requesting base station to the DHCP server instead of the help requesting base station; and the basic parameter information sending module is configured to: And sending basic configuration parameter information of the help requesting base station that is requested by the DHCP requesting module to the help requesting base station.

10. The base station according to claim 9, wherein

The help probe transmission processing module is further configured to start a wait response timer; and if it is detected that the wait response timer expires, the rescue response receiving processing module still does not receive the rescue response message, and then resend the Say help to detect broadcast messages.

The base station according to claim 9, wherein the rescue request message sent by the rescue request sending processing module carries the unique identification information of the help receiving base station;

12. The base station according to claim 11, wherein

The rescue response sending processing module is further configured to: add the identification label information of the own base station to the rescue response message broadcasted to the helper base station and other neighboring base stations, and record the identification label information locally; The identification label information is used to uniquely identify the base station; The rescue request message sent by the rescue request sending and processing module further carries the identifier label information of the rescue base station;

13. The base station according to claim 9, wherein

The help probe sending processing module is further configured to set an operating state value of the base station to indicate that it is in a waiting for rescue state;

The rescue response receiving processing module is further configured to: after receiving the rescue response message broadcast by the neighboring base station, determine whether the running state value of the base station indicates that it is in a waiting state; if the running state value of the base station is Waiting for the rescue state means that it is the rescue base station, and the step of selecting the rescue base station; if the running state value of the self does not indicate that it is in the waiting for rescue state, the rescue response message is discarded.